Which of the following RAS neurotransmitters stimulates the cerebral cortex for wakefulness?
A. Norepinephrine
B. GABA
C. Dopamine
D. Both dopamine and norepinephrine are correct.
Answer: D
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A term meaning toward the back of the body or body part is ___________________.
Fill in the blank(s) with the appropriate word(s).
Abnormal heart rhythms are called ________
A) Arrhythmias B) Bradycardia C) Sinus rhythm D) Tachycardia
Given the information below, the neuron with the characteristics listed in choice __________ would have the fastest conduction velocity
A) Myelinated, 50 ?m diameter B) Myelinated, 10 ?m diameter C) Unmyelinated, 50 ?m diameter D) Unmyelinated, 10 ?m diameter Fill in the blank with the correct answer.
Which is not true about the thyroid gland?
A. It requires iodine to synthesize thyroid hormone. B. It is located on the anterior surface of the trachea, inferior to the thyroid cartilage. C. It has two lobes connected by a central portion called the commissure. D. It secretes thyroid hormone in response to stimulation by TSH. E. An enlargement of the thyroid gland is called a goiter.